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L. K. BINGHAM. APPARATUS POR GASTING'PRINTERS ROLLERS. No. 419,915. Patented Jan. 21,1890'.-

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LEANDER K. BINGHAM, OF NEV YORK, N. Y.

APPARATUS FOR CASTING PRINTERS ROLLERS.

SPECIFICATION forming part of Letters Patent No. 419,915, dated January 21, 1890.

' Application filed July 19, 1889. Serial No. 818,024. (No model.)

Y a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements` in Apparatus for Casting Printers Rollers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

Figure l is a vertical diametric section through the apparatus, the supplemental bote tom being cut on the line 1 l, Fig. 3. Fig. 2 is a section of the supplemental bottom on the line 2 2, Fig. 3. Fig. 3 is an enlarged top view of the supplemental bottom. Fig. 4 is an enlarged detail of part of the lower end of the apparatus, showing a modification of said lower end. Fig. 5 is a bottom view of part of Fig. 4.

This invention relates to improvements in apparatus for making printers rollers; and it consists, broadly, in an apparatus provided at its lower ends with channels connecting the bottoms ot' the mold-tubes, so that composition poured down one tube will iow into all of them, or composition admitted at the bottom will rise into all of the tubes without any manipulation of parts of the apparatus.

In the annexed drawings, the letter A indicates a cylinder or receptacle, having the trunnions a cl., whereby it is to be supported in suitable bearings. This cylinder or receptacle also has the steam and water inlet a and the overflow a2. Within the cylinder are placed several diaphragms or cross-heads B, provided with the large holeslb, and among these the small apertures b', forming thus foraminous diaphragms. The holes b arc the same in number, and are aligned with the holes c and el in the cylinder-heads C and D. These diaphragms may have the upturned edges b2, by which they may be secured in place, or they may rest on the ledges b3.

Passing through the holes c Z9 d are the moldtubes E, fitting said holes snugly and steamn tight.

The holes d of the head D have on the outside the cylindrical countersinks CZ. Fitting. @these countersinksd are the glands G, which are internally threaded at g to tit threads e upon the lower ends of the tubes F., a packing gbeing interposed between the glands and the bottoms of the countersinks. By means of these glands and packings the tubes are held to the head D by a steam-tight joint, the outer surface of the glands being flush with the face of the head D, the whole making a close, compact, and smooth finish to the connection between the mold-tubes and the bottom head.

Surrounding the top projecting ends e of the mold-tubes E are the rings H, having a recess h, wherein are the packing' 7L and the necks h2, which closely fit the ends e of the mold-tubes Il. This forms a close-Iitting joint at the top of these 1noldtubes, and yet allows proper movement thereof, as will be explained. Secured to the bottom head D is the supplemental bottom N. This bottom has in upper face the channels n n n2, arranged as shown, and the recesses n3, the channels connecting the recesses, as indicated. These recesses are so located that when the supplemental bottom is in place a recess will come under each lower end e of a mold-tube E, as fully shown in Fig. 1.

Made in this supplemental bottom is a hole f 8o oft to one side from the center recess.

Secured to the under side of the supplemental bottom is the inlet F, having the opening f at the hole f, the flange f2 for securing it to the supplemental bottom, and the projecting threaded tubular extension f3.

The head D is held to the flange p at the bottom of the shell of the cylinder by the pins P. These pins have the cylindrical parts p', which pass through the flange p, the conical parts p2, which engage similar conical holes y p3 in the head D, and the projecting parts p4.

The conical parts of the pins secure the bottom head D to the cylindershell. The supplemental bottom N has holes n4 to engage the pins P. Two such holes are sufiicient to engage two of the pins, which are at the ends of a diameter. Thus the supplemental bottom is assuredly centered and its recesses are aligned with the bottoms ot the mold-tubes.

In the form shown in Fig. 4; the channels r are made in the bottom of the head D, the countersinks R are made deeper than in the other form, and the glands and packings are lIo seated at the bottoms of these counter-sinks, having openings s'f'rom the channels into said countersinks. When these channels are made in the head D, the latter Will be somewhat thicker than When the channels are in the supplemental bottom, the center of the head being dropped, as shown at di In this case the supplemental bottom is made cup-shaped, so as to fit snugly the head D, the upper surface of the supplemental bottom being flat, as shown, and the bottom being provided With the circumferential iiange n4, by which it is clamped in place. The supplemental bottom has the holes n.5 for the ends of the rollerstocks, and the aperture n, to which the inner end of the composition-inlet is secured. By the construction at the bottom the composition can be let into the cylinder or receptacle at the bottom or the top under any desired pressure, and rises in the mold-tubes free from any air-bubbles or foaming and in a condition to set firm and solid.

If it be desired not to use all the moldtubes, one or more may be closed by using stop-gates, such as indicated at s s s2 in Fig. 3; or a plug may be placed in the bottom of any one-or more mold-tubes.

In the present case the channels at the lower end of the apparatus are the only subject claimed. The other parts are shown and described so as to delineate a complete apparatus, and they are the subject of another application made by me February l5, 1889, Serial No. 299,949.

Having thus described my invention, What I claim isl. An apparatus for making printers rollers,provided at its bottom with a compositioninlet, an opening in the bottom into which this inlet leads, and channels leading from this opening to the bottoms of the moldtubes, as set forth.

2. The combination of the cylinder, the mold-tubes, the bottom head having the holes Within which the lower ends of the mold-tubes are held, the bottom provided in its top With the channels leading to the bottoms of the moldtubes, a composition -inlet underneath the bottom, and a hole into Which the inlet leads, as set forth.

3. An apparatus for making printers rollers, consisting of a cylinder or receptacle provided With an upper and lower head, each head having holes, the mold-tubes held in` such holes, and the supplemental bottom, the said apparatus being provided at its bottom With channels communicating with one al1- other and communicating with the holes in the lower head, as set forth.

In testimony whereof I affix my signature in presence of tWo Witnesses.

LEANDER K. BINGHAM.

VVituesses:

C. MACARTHJUR, CHARLES BINGHAM. 

